TM 11-6625-3081-231-24.TEST CONSOLE TEST BENCH 2A2 (cont)1-24g.MULTIPROGRAMMER ASSEMBLY 2A2A6 AND MULTIPROGRAMMER EXTENDER ASSEMBLY 2A2A11(1) General.The multiprogrammer assembly is the master control unit for themultiprogrammer system.The multiprogrammer extender assembly increases the systeminput/output capacity.Refer to FO-24 for a block diagram of multiprogrammer assembly2A2A6 and multiprogrammer extender assembly 2A2A11.(a) The multiprogrammer assembly consists of hinged-front control panel, a20-slot card cage, a dc power supply, and a rear panel containing input and outputdata and ac power connectors.Of the 20 card slots, four (slots 100, 200, 300, and500) contain interfacing, data processing, and control CCAs, 13 (slots 400 thru 410,412, and 413) contain input/output CCAs, and one (slot 600) contains a voltage regu-lator CCA.Slots 411 and 414 are empty.(b) The multiprogrammer extender assembly is physically similar to the mul-tiprogrammer assembly, but has no provisions for local programming. Its control panelcontains only an ON/OFF power switch and associated indicator lamp.The card cage, dcpower supply, and rear panel are the same, however, only the extender input CCA A1(slot 100), input/output transfer CCA A2 (slot 200), logic and timing CCA A3 (slot300), and six input/output CCAs A4 (slots 400 thru 403, 408, and 409) are used. Theremaining slots are empty.(2) Multiprogrammer Assembly(a) Data and control signals are exchanged between the computer and multi-programmer assembly through connector J1.Computer inputs (16 data bit lines and acontrol gate line) are routed through adapter CCA A7 to the back-plane wiring ofinterconnect board A9.Input CCA A1 (slot 100) is the first plug-in CCA to receivethe inputs, which are applied to identical termination networks.The networksminimize noise and ringing on transmission lines.(b) After being interfaced, the computer inputs are applied to remote/localCCA A2 (slot 200).The remote/local CCA selects either the computer or the localcontrol panel as the programming source and distributes the data to the logic andtiming CCA.Change 61-155